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Has anyone tried replacing the switch with a relay and worked out a "tune button" (or tune output) that would pull this into the circuit for ## seconds, then release it? It seems this kind of thing

Others have posted to Chris as the original poster so I will direct my apology there. Chris, I needed to look at the posting message title to see that the board in question is a Rev 5.? That is an

The sockets work out great on the QDX. I'm about to try them on a QMX so can't say how that works. Space may be tight. 73, Cliff, AE5ZA

That would be great Ross...I'm looking forward to building one for 6-meters...Many thanks in advance...Jim WB2LHP

Aha, I knew I'd seen a photo with pin headers under the BS170's recently - check out the picture of the heatsinking on message /g/QRPLabs/message/108109 Might want to ask Cliff, AE5ZA

Hi Stephen. I was probably a bit harsh in responding to you. Your idea is a good one, and there might be a great part out there that reduces parts count at low cost and is repairable by the average

After repairs done multiple times replacing FET Q9 in my QDX transceivers the pads are getting “tired.” ?I used some small brass tube stock (~1 mm outer diameter) to make eyelets or grommets to

My QMX kit is somewhere between Turkey and the UK so I'm getting prepared...? Has anyone tried or thought it necessary to fit sockets for the BS170s?? Is there space on the board?? It seems to me

? Hi Chris, Whoa! Sounds far fetched but reported DC behaviour on D3 and D6 is inverted logicwise to what I would expect and is definitely the odd one out. Now I notice the same on your original

LIN_REG_EN is connected to a MCU pin through a 100K resistor. It's quite possible the MCU is taking some current even when inactive, this will lower LIN_REG_EN relative to the supply.? I'm sure that

Good morning Hans, I was already impressed by your technical abilities, but this is another powerful example of communication and literary skills! Top! Hans Merz / Pa3AAW

It is a long time since I played with my QCX so I do not remember exactly my solution. Using Windows I had to find a suitable terminal program, or reset something for it to work. If not Putty then

Hi Jerry, I just realized you should get a ? reply to an unrecognized command, not a '. You cant use an RS232 to USB adaptor either, you need a SERIAL to USB adaptor (as in the QLG2...?) 73 Ken

Hi Jerry Yes, QCX has a timeout. You can't type a command in one character at a time at human speed. You need to prepare the command elsewhere, then copy-and-paste it in so that all the characters

Good morning folks and happy Wednesdays... I will put several replies in ONE post. One long post. *Jonathan: * Yes, correct. PD7 is configured push-pull during the boot up. Before it is activated

Jim and Bob, and I’m sure others, I’ve done QDX-Ms for 8m, 8&6m and 6m, I’ll write up all the stuff and post it here. I was considering 4m but I think that’ll be pushing it. 73 Ross EX0AA 6

The statement below about a 20 Percent tol on IP toroids is WRONG.? There is no such generic number. For type -6 material which is the most common material for HF use look at

Sometimes there's a inter-character timeout on the cat. I know the 991 has that...

I suspect that, as Chris alluded to, Hans has PD7 configured in push-pull rather than open collector, so it's sinking the (minimal) current to drop LIN_REG_EN down to 3.3V when the processor is

Actually I just tried it with FLRIG and it has a "Send" function where you type in the string and hit send.? When I did that the QCX returned a single (`).? Also commands like FA; and FA28074000;